Background/Discussion
The City of Council Bluffs owns or sponsors multiple levee segments which encompass the City Federal Levee System, providing flood protection from the Missouri River, Mosquito Creek, and Indian Creek. These levee systems are currently shown on FEMA floodplain maps as being accredited and are identified as providing protection from the 100-year flood or 1% annual chance flood event.
In order to maintain the level of protection identified on the FEMA Flood Insurance Rate Map, it is necessary to provide documentation to FEMA that complies with the requirements of 44 CFR 65.10. If the levees are not certified, they will be de-accredited and FEMA will begin the process of updating maps. Areas previously protected by the levees will be identified as flood-prone.
In order to meet the criteria for levee certification, improvements to each of the levee systems will be necessary.
This project also addressed deficiencies identified during past USACE inspections.
The purpose of the Drainage MR_2 project was to replace deteriorated drainage structure pipes, rehabilitate the associated gate well structures, and remove unacceptable tree, utility and fence encroachments.
The planned FY17 CIP included $5,000,000 programmed for levee improvements funded with $2,722,000 in Sales Tax Funds and 2,278,000 from the Iowa Flood Mitigation Program.
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Original Contract Amount
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$885,355.82
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Change Orders (+4.79%)
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$ 42,397.85
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Final Contract Amount
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$927,753.67
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Less Previous Payments
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$881,365.99
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Retainage Due Contractor
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$ 46,387.68
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The Contractor completed the project on time and did not receive any non-compliance notices.